HomeMy WebLinkAboutUtility detailsTRENCH SHORING - MINIMUM REQUIREMENTS
IDENTIFIER
BEDDING
SIZE & SPACING OF MEMBERS
DEPTH
KIND OR CONDITION
UPRIGHTS
STRINGERS
CROSS BRACES, WIDTH OF TRENCH
MAXIMUM SPACING
OF TRENCH
(ft)
OF EARTH
MINIMUM
MAXIMUM
MINIMUM
MAXIMUM
UP TO 3
3 TO 6
6 TO 9
9 TO 12
12 TO 15
VERTICAL
YARD (WHICHEVER IS
=.-o
U
GREATER)
DIMENSION
SPACING
DIMENSION
SPACING
FEET
FEET
FEET
FEET
FEET
(ft)
ORIZONTA
(ft)
F
®WWo,o
(in)
(ft)
(in)
(ft)
(in)
(In)
(in)
(In)
(in)
U)
3 x 4
0
F
00
0
5TO10
HARD, COMPACT
OR
6
2 x 6
4 x 4
4 x 6
6 x 6
6 x 8
4
6
2 x 6
3 x 4
LIKELY TO CRACK
OR
3
4 x 6
4
2 x 6
4 x 4
4 x 6
6 x 6
6 x 8
4
6
2 x 6
SOFT, SANDY, OR FILLED
3 x 4
OR
CLOSE
SHEETING
4 x 6
4
4 x 4
4 x 6
6 x 6
6 x 8
8 x 8
4
6
2 x 6
HYDROSTATIC PRESSURE2
3 x 4
OR
CLOSE
SHEETING
6 x 8
4
4 x 4
4 x 6
6 x 6
6x 8
8 x 8
4
6
6
3 x 4
10 TO 15
HARD
OR
4
4x6
4
4 x 4
4x6
6 x 6
6x8
8 x 8
4
6
2 x 6
3 x 4
-
LIKELY TO CRACK
OR
2
4 x 6
4
4 x 4
4x6
6 x 6
6x8
8x8
6
2 x 6
SOFT, SANDY, OR FILLED2
3 x 4
OR
CLOSE
SHEETING
4 x 6
4
4 x 6
6 x 6
6 x 8
8 x 8
8 x 10
4
6
6
HYDROSTATIC PRESSURE
3 x 6
CLOSE
SHEETING
8 x 10
4
4 x 6
6 x 6
6 x 8
8 x 8
8 x 10
4
6
15 TO 20
ALL KINDS OR CONDITIONS
3 x 6
CLOSE
SHEETING
4x12
4
4x12
6 x 8
8 x 8
8x10
10x10
4
6
OVER 20
ALL KINDS OR CONDITIONS
3 x 6
CLOSE
SHEETING
6x8
4
4x12
8 x 8
8x10
10x10
10x12
4
6
1 IKGINUN JAI:KJ MAT dt UJtU IN LItU Ut-, Ute IN UUMBINAIIUN WITH, CKUSS HKACES. SHORING IS
NOT REQUIRED IN SOLID ROCK, HARD SHALE, OR HARD SLAG. WHERE POSSIBLE, STEEL SHEET PILING
AND BRACING OF EQUAL STRENGTH MAY BE SUBSTITUTED FOR WOOD.
ASTM D2321-89
CLASSES OF EMBEDMENT & BACKFILL MATERIALS
GIVEN IN TABLE 1 1 OF ASTM D2323 & SUMMARIZED AS:
CLASS IA: ANGULAR, CRUSHED ROCK, NO -FINES
CLASS IB: _-ANGULAR, _CRUSHED -ROCK AND SAND, WELL GRADED TO MINIMIZE MIGRATION OF ADJACENT SOILS. LITTLE
OR NO FINES.
CLASS Ii: COARSE GRAINED SOILS, CLEAN. NATIVE SOILS FROM THE TRENCH GENERAL DO MEET THIS REQUIREMENT.
THE CONTRACTOR MAY USE NATIVE MATERIALS_ FROM THE TRENCH ONLY AFTER PROVIDING SOILS LABORATORY TEST
DEMONSTRATING COMPLIANCE.
CLASS III: COARSE GRAINED SOILS WITH FINES. NATIVE SOILS FROM THE TRENCH GENERALLY DO NOT MEET THIS
REQUIREMENT. THE CONTRACTOR MAY USE NATIVE MATERIALS FROM THE TRENCH ONLY AFTER PROVIDING SOILS
LABORATORY TEST DEMONSTRATING COMPLIANCE. BANK RUN SAND GENERALLY MEETS THIS REQUIREMENT.
CLASS IV A: SELECT MATERIAL FROM THE TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC
CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS. THIS MATERIAL
MUST HAVE A LIQUID LIMIT <50 AND A PLASTICITY INDEX >7 AND >"A" LIME. SEE SPECIFICATION ASTM D2321-89
FOR DETAILS.
CLASS IV B: SELECT MATERIAL FROM TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC CLAYS
OF MEDIUM TO HIGH PLASTICITY, FAT CLAYS, INORGANIC SILTS, FINE SANDY OR SILTY SOILS, ELASTIC SILTS.
CLASS V: ORGANIC SOILS. MATERIAL FROM THE TRENCH WHICH DOES NOT MEET THE REQUIREMENTS OF THE ABOVE
CLASSES. ALL ROCKS, LUMPS, AND CLODS MUST BE REMOVED FROM THIS MATERIAL PRIOR TO PLACEMENT IN THE
TRENCH. THIS MATERIAL IS ONLY APPROPRIATE FOR TOPSOIL IN NON-STRUCTUAL AREAS.
BEDDING TABLE
IDENTIFIER
BEDDING
INITIAL
TYPE
TYPE
I
BACKFILL
D
CLASS 111
CLASS it
OC
CLASS iB
[CLASS 1B
10% (MIN) CEMENT PER
CEMENT
CUBIC YARD OF SAND
STABILIZED
OR 2.5 SACKS OF
wLgo
CEMENT PER CUBIC
SAND
YARD (WHICHEVER IS
=.-o
U
GREATER)
EXISTING
GRADE
J
_j J
d L�
F- Y
Z U
d
m
SPRING LINE -_
OF PIPE
c�
Z Z
w d.
m
TRENCH WIDTH
MAX = PIPE O.D.+24"
MIX BROWN COLORING IN
CEMENT STABILIZED SAND FOR
WASTEWATER FORCE MAINS
CLASS V: SALVAGE
TOPSOIL
CLASS IV B - COMPACT IN
8 (MAX) LIFTS TO 90%
STANDARD PROCTOR DENSITY
@ 0 TO +47.. OF OPTIMUM
MOISTURE CONTENT
INITIAL BACKFILL - COMPACT
IN 6" (MAX) LIFTS TO 90%
-STANDARD PROCTOR DENSITY
0 0 TO +4% OF OPTIMUM
MOISTURE CONTENT - WORK
IN AROUND PIPE BY HAND TO
PROVIDE UNIFORM SUPPORT
UP TO SPRING LINE
-BEDDING - COMPACT IN 6"
(MAX) LIFTS TO 90%
STANDARD PROCTOR DENSITY
@ 0 TO +4% OF OPTIMUM
MOISTURE CONTENT - LEVEL
FINAL GRADE BY HAND
WHERE THE TRENCH BOTTOM IS
UNSTABLE, EXCAVATE TO A DEPTH AS
REQUIRED BY THE ENGINEER AND
REPLACE w/A FOUNDATION OF CLASS 18
MATERIAL, COMPATED IN 6" (MAX)
LIFTS TO 85% STANDARD PROCTOR
DENSITY
PRIVATE UTILITY TRENCH BEDDING
N.T.S.
W
IL
O
in m
0 J `✓
W O
0 U)
Z
W Uj
0 0:�
w > '-
X d ,-
c
Fal
2. THE PRESENCE OF GROUND WATER
REQUIRES SPECIAL TREATMENT.
APPROXIMATE ANGLE OF REPOSE
FOR SLOPING OF SIDES OF EXCAVATIONS
TRENCH _SAFETY NOTES:
1. O.S.H.A. STANDARD 29 C.F.R. 1926.650 SHALL BE USED FOR THE DESIGN OF
TRENCH SAFETY REQUIREMENTS. SHOULD THERE BE ANY CONFLICT BETWEEN THIS
DRAWING AND C.F.R. 1926.650, THE O.S.H.A. STANDARD SHALL PREVAIL.
2. WHEN CONDITIONS ARE SATURATED OR SUBMERGED, USE THIGH SHEETING. THIGH
SHEETING REFERS TO THE USE OF SPECIAL TIMBER PLANKS AT LEAST THREE INCHES
THICK, STEEL SHEET PILING, OR SIMILAR CONSTRUCTION, THAT WHEN DRIVEN OR
PLACED IN POSITION PROVIDE A TIGHT WALL TO RESIST THE LATERAL PRESSURE OF
WATER. CLOSE SHEETING REFERS TO THE PLACEMENT OF PLANKS SIDE-BY-SIDE
ALLOWING AS LITTLE SPACE AS POSSIBLE BETWEEN THEM.
3. ALL SPACING INDICATED IS MEASURED CENTER TO CENTER.
4. WALLS ARE TO BE INSTALLED WITH THE GREATER DIMENSION HORIZONTAL.
5. IF THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE TO
THE BOTTOM OF THE TRENCH EXCEEDS TWO AND ONE-HALF FEET, UPRIGHTS SHALL
BE FIRMLY EMBEDDED OR A MUD SILL SHALL BE USED. WHERE UPRIGHTS ARE
EMBEDDED, THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE
TO THE BOTTOM OF THE TRENCH SHALL NOT EXCEED 36 INCHES. WHEN MUD SILLS
ARE USED, THE VERTICAL DISTANCE SHALL NOT EXCEED 42 INCHES. (NOTE: MUD
SILLS ARE VALES THAT ARE INSTALLED AT THE TOE OF THE TRENCH SIDE.)
6. TRENCH JACKS MAY BE USED IN LIEU OF OR IN COMBINATION WITH TIMBER CROSS
BRACES.
7. IF SHORING IS THE CHOSEN SUPPORT SYSTEM, THE INSTALLATION IS TO START
FROM THE TOP OF THE TRENCH OR EXCAVATION AND WORK DOWNWARD.
8. SPOIL MUST BE STORED TWO FEET OR MORE FROM THE EDGE OF THE EXCAVATION,
AND BE RETAINED IN AN EFFECTIVE MANNER.
9. WHEN HEAVY LOADS MUST BE LOCATED NEAR AN EXCAVATION, THE WALLS MUST
BE BRACED, SHEET PILED OR SHORED TO SAFELY SUPPORT THE EXTRA WEIGHT.
10. DIVERSION DIKES AND DITCHES OR OTHER SUITABLE MEANS MUST BE USED TO
PREVENT SURFACE WATER FROM ENTERING AN EXCAVATION AND TO PROVIDE
ADEQUATE DRAINAGE OF THE AREA ADJACENT TO THE EXCAVATION. WATER IS NOT
ALLOWED TO ACCUMULATE IN A TRENCH OR EXCAVATION.
11. AN ADEQUATE MEANS OF EXIT, SUCH AS A LADDER OR STEPS MUST BE
PROVIDED AN LOCATED SO AS TO REQUIRE NO MORE THAN 25 FEET OF LATERAL
TRAVEL.
1391 SEAMIST LANE <77845>
POST OFFICE BOX 9253
COLLEGE STATION, TEXAS 77842
EMAIL: civil@nnengineer.com
OFFICE - (979) 690-0329
FAX - (979) 690-0329
SURVEYOR
KERR SURVEYING, LLC
505 CHURCH STREET
COLLEGE STATION, TX 77841
OFF: (979) 268-3195
FAX: (979) 691-8904
ARKI DATE I DESCRIPTION
iILLi I'
•
PRELIMINARY
DOCUMENTTHIS
FOR THE PURPOSE OF
AUTHORITYREVIEW UNDER THE
•F RA:•
• 88583,ON AR
•i: NOT • BE USED
FOR CONSTRUCTION,BIDDING
OR PERMIT PURPOSES.-
CLIENT INFORMATION
FI MANAGEMENT
c/o ALI JAFFAR
5727 RICHMOND AVE., APT. 202
DALLAS, TX. 75206
OFF: (979) 314-1333
FAX: (979) 216-1586
FILENAME: 0325UPlA I SCALE: N.T.S.
SUBMITTED DATE: FEBRUARY 11, 2008
DRAWN BY: A.J.B.
CHECKED BY: R.A.M.
FIELD BOOK: 9 PAGES: 38-43
RME CONSULTING ENGINEERS
CLIENT NO. PROJECT NO.
220 - 0325
■
SHEET 1 1 OF 11
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CLIENT INFORMATION
FI MANAGEMENT
c/o ALI JAFFAR
5727 RICHMOND AVE., APT. 202
DALLAS, TX. 75206
OFF: (979) 314-1333
FAX: (979) 216-1586
FILENAME: 0325UPlA I SCALE: N.T.S.
SUBMITTED DATE: FEBRUARY 11, 2008
DRAWN BY: A.J.B.
CHECKED BY: R.A.M.
FIELD BOOK: 9 PAGES: 38-43
RME CONSULTING ENGINEERS
CLIENT NO. PROJECT NO.
220 - 0325
■
SHEET 1 1 OF 11
�• •� ^��. 1-InRU 3LH�ti
. Wrltnt I`UNBLE, STEEL SHEET PILING
AND BRACING OF EQUAL STRENGTH MAY BE SUBSTITUTED FOR WOOD.
ASTM D2321-89
CLASSES OF EMBEDMENT & BACKFILL MATERIALS
GIVEN IN TABLE 1 1 OF ASTM D2323 & SUMMARIZED AS:
CLASS IA: ANGULAR, CRUSHED ROCK, NO FINES
CLASS IB: ANGULAR, CRUSHED ROCK AND SAND, WELL GRADED TO MINIMIZE MIGRATION OF ADJACENT SOILS. LITTLE
OR NO FINES.
CLASS I1: COARSE GRAINED SOILS, CLEAN. NATIVE SOILS FROM THE TRENCH GENERAL DO MEET THIS REQUIREMENT.
THE CONTRACTOR MAY USE NATIVE MATERIALS -FROM THE TRENCH ONLY AFTER PROVIDING SOILS LABORATORY TEST
- DEMONSTRATING COMPLIANCE.
CLASS III: COARSE GRAINED SOILS WITH FINES. NATIVE SOILS FROM THE TRENCH GENERALLY DO NOT MEET THIS
REQUIREMENT. THE CONTRACTOR MAY USE NATIVE MATERIALS FROM THE TRENCH ONLY AFTER PROVIDING SOILS
LABORATORY TEST DEMONSTRATING COMPLIANCE. BANK RUN SAND GENERALLY MEETS THIS REQUIREMENT.
CLASS IV A: SELECT MATERIAL FROM THE TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC
CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS. THIS MATERIAL
MUST HAVE A LIQUID LIMIT <50 AND A PLASTICITY INDEX >7 AND >"A" LIME. SEE SPECIFICATION ASTM D2321-89
FOR DETAILS.
CLASS IV B: SELECT MATERIAL FROM TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC CLAYS
OF MEDIUM TO HIGH PLASTICITY, FAT CLAYS, INORGANIC SILTS, FINE SANDY OR SILTY SOILS, ELASTIC SILTS.
CLASS V: ORGANIC SOILS. MATERIAL FROM THE TRENCH WHICH DOES NOT MEET THE REQUIREMENTS OF THE ABOVE
CLASSES. ALL ROCKS, LUMPS, AND CLODS MUST BE REMOVED FROM THIS MATERIAL PRIOR TO PLACEMENT IN THE
TRENCH. THIS MATERIAL IS ONLY APPROPRIATE FOR TOPSOIL IN NON-STRUCTUAL AREAS.
BEDDING TABLE
IDENTIFIER
TRENCH SHORING
- MINIMUM
REQUIREMENTS
TYPE
BACKFILL
OD
CLASS III
CLASS II
�C
CLASS 1B
CLASS 1B
_
10% (MIN) CEMENT PER
SIZE &SPACING
OF
MEMBERS
OR 2.5 SACKS OF
SAND
CEMENT PER CUBIC
J
YARD (WHICHEVER IS
DEPTH
OF TRENCH
KIND OR CONDITION
UPRIrM7AXIMUM
STRINGERS
CROSS BRACES; WIDTH
OF
TRENCH
J_N
< N
(ft)
OF EARTHMAXIMUM
MINIMUM
m
MINIMUM
MAXIMUM
UP TO 3
3 TO 6
-TO
E
d ON
�0Q
bi
d
SPACING
ui
Z
DIMENSIONCING
(in)
(ft)
DIMENSION
SPACING
FEET
FEET
9
FEET
9 TO 12
FEET
12 TO 15
FEET
VERTICAL
ORIZONTA
0
U
0�
w>�\
(in)
(ft)
(in)
(in)
(in)
(in)(in)(ft)
(ft)
5 TO 10
HARD, COMPACT
3 OR 4
6
2 x 6
2 x 6
4 x 4
4 x 6
6
x 6
6 x 8
4
6
LIKELY TO CRACK
3 OR 4
3
4 x 6
4
2 x 6
4 4
2 x 6
x
4 x 6
6
x 6
6 x 8
4
6
SOFT, SANDY, OR FILLED
3 x 4
OR
CLOSE
SHEETING
4 x 6
4
4 x 4
4 6
2 x 6
x
6 x 6
6
x 8
8 x 8
4
6
HYDROSTATIC PRESSURE
3 x 4
CLOSE
SHEETING
6 x 8
4
4x4
4x6
2x6
6 x6
6x8
8x8
4
6
10T015
HARD
3x4
OR
2 x 6
4
4 x 6
4
4 x 4
4 x 6
6 x 6
6
x 8
8 x$
4
6
LIKELY TO CRACK
3 OR 4
2 x 6
2
4 x 6
4
4 x 4
4 x 6
6 x 6
6
x 8
8 x 8
6
SOFT, SANDY, OR FILLED
3 x 4
2 OR 6
CLOSE
SHEETING
4 x 6
4
4 x 6
6 x 6
6 x 8
8
x 8
8 x 10
4
6
HYDROSTATIC PRESSURE
3 x 6
CLOSE
SHEETING
8 x 10
4
4 x 6
6 6
x
6 x 8
8
x 8
8x10
4
6
15 TO 20
ALL KINDS OR CONDITIONS
3 x 6
CLOSE
4 x 12
4
4x12
6 8
x
8 x 8
8x10
10x10
4
6
[SHEETING
OVER 20
ALL KINDS OR CONDITIONS
3 x 6
CLOSE
SHEETING
6x8
4
4x12
8x8
8x10
1 TRENCH JACKS
NOT REQUIRED
MAY BE USED IN LIEU OF,
IN <;0I In POrle W Aan ICU
OR IN COMBINATION WITH, CROSS BRACES. SHORING IS
A. C f%n A 9- PM - , - .... =- _ _
10x10
10x12
4.
6
�• •� ^��. 1-InRU 3LH�ti
. Wrltnt I`UNBLE, STEEL SHEET PILING
AND BRACING OF EQUAL STRENGTH MAY BE SUBSTITUTED FOR WOOD.
ASTM D2321-89
CLASSES OF EMBEDMENT & BACKFILL MATERIALS
GIVEN IN TABLE 1 1 OF ASTM D2323 & SUMMARIZED AS:
CLASS IA: ANGULAR, CRUSHED ROCK, NO FINES
CLASS IB: ANGULAR, CRUSHED ROCK AND SAND, WELL GRADED TO MINIMIZE MIGRATION OF ADJACENT SOILS. LITTLE
OR NO FINES.
CLASS I1: COARSE GRAINED SOILS, CLEAN. NATIVE SOILS FROM THE TRENCH GENERAL DO MEET THIS REQUIREMENT.
THE CONTRACTOR MAY USE NATIVE MATERIALS -FROM THE TRENCH ONLY AFTER PROVIDING SOILS LABORATORY TEST
- DEMONSTRATING COMPLIANCE.
CLASS III: COARSE GRAINED SOILS WITH FINES. NATIVE SOILS FROM THE TRENCH GENERALLY DO NOT MEET THIS
REQUIREMENT. THE CONTRACTOR MAY USE NATIVE MATERIALS FROM THE TRENCH ONLY AFTER PROVIDING SOILS
LABORATORY TEST DEMONSTRATING COMPLIANCE. BANK RUN SAND GENERALLY MEETS THIS REQUIREMENT.
CLASS IV A: SELECT MATERIAL FROM THE TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC
CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS. THIS MATERIAL
MUST HAVE A LIQUID LIMIT <50 AND A PLASTICITY INDEX >7 AND >"A" LIME. SEE SPECIFICATION ASTM D2321-89
FOR DETAILS.
CLASS IV B: SELECT MATERIAL FROM TRENCH CONSISTING OF FINE-GRAINED SOILS (INORGANIC). INORGANIC CLAYS
OF MEDIUM TO HIGH PLASTICITY, FAT CLAYS, INORGANIC SILTS, FINE SANDY OR SILTY SOILS, ELASTIC SILTS.
CLASS V: ORGANIC SOILS. MATERIAL FROM THE TRENCH WHICH DOES NOT MEET THE REQUIREMENTS OF THE ABOVE
CLASSES. ALL ROCKS, LUMPS, AND CLODS MUST BE REMOVED FROM THIS MATERIAL PRIOR TO PLACEMENT IN THE
TRENCH. THIS MATERIAL IS ONLY APPROPRIATE FOR TOPSOIL IN NON-STRUCTUAL AREAS.
BEDDING TABLE
IDENTIFIER
BEDDING
INITIAL
TYPE
TYPE
BACKFILL
OD
CLASS III
CLASS II
�C
CLASS 1B
CLASS 1B
_
10% (MIN) CEMENT PER
CEMENT
[STABILIZED
CUBIC YARD OF SAND
�WZof00z
OR 2.5 SACKS OF
SAND
CEMENT PER CUBIC
J
YARD (WHICHEVER IS
z
GREATER)
EXISTING
GRADE
SPRING LINE
OF PIPE
TRENCH WIDTH
MAX = PIPE O.D.+24"
MIX BROWN COLORING IN
CEMENT STABILIZED SAND FOR
WASTEWATER FORCE MAINS
N.T.S.
CLASS V: SALVAGE
TOPSOIL
CLASS IV B - COMPACT IN
8" (MAX) LIFTS TO 90%
STANDARD PROCTOR DENSITY
0 0 TO +4% OF OPTIMUM
MOISTURE CONTENT
INITIAL BACKFILL - COMPACT
IN 6" (MAX) LIFTS TO 90%
STANDARD PROCTOR DENSITY
Cel 0 TO +4% OF OPTIMUM
MOISTURE CONTENT - WORK
IN AROUND PIPE BY HAND TO
PROVIDE UNIFORM SUPPORT
UP TO SPRING LINE
BEDDING - COMPACT IN 6"
(MAX) LIFTS TO 90%
STANDARD PROCTOR DENSITY
0 0 TO +4% OF OPTIMUM
MOISTURE CONTENT - LEVEL
FINAL GRADE BY HAND
WHERE THE TRENCH BOTTOM IS
UNSTABLE, EXCAVATE TO A DEPTH AS
REQUIRED BY THE ENGINEER AND
REPLACE W/A FOUNDATION OF CLASS 1B
MATERIAL, COMPATED IN 6" (MAX)
LIFTS TO 85% STANDARD PROCTOR
DENSITY
1391 SEAMIST LANE <77845>
POST OFFICE BOX 9253
COLLEGE STATION, TEXAS 77842
EMAIL: civil@rmengineer.eom
OFFICE - (979) 690-0329
FAX - (979) 690-0329
SURVEYOR
KERR SURVEYING, LLC
505 CHURCH STREET
COLLEGE STATION, TX 77841
OFF: (979) 268-3195
FAX: (979) 691-8904
DATE I DESCRIPTION
I
PRELIMINARY
THIS DOCUMENT IS RELEASED
FOR THE PURPOSE OF
AUTHORITYREVIEW UNDER THE
OF -.;•
• 88583, ON ,.
!!: IT IS NOTTO BE USED
FOR CONSTRUCTION,BIDDING
OR PERMIT PURPOSES.
SPECIAL NOTES:
1. CLAYS, SILTS, LOAMS,_ OR
NON-HOMOGENEOUS SOILS REQUIRE
SHORING AND BRACING.
2. THE PRESENCE OF GROUND WATER
REQUIRES SPECIAL TREATMENT.
APPROXIMATE ANGLE OF REPOSE
TRENCH SAFETY NOTES:
1. O.S.H.A. STANDARD 29 C.F.R. 1926.650 SHALL BE USED FOR THE DESIGN OF
TRENCH SAFETY REQUIREMENTS. SHOULD THERE BE ANY CONFLICT BETWEEN THIS
DRAWING AND C.F.R. 1926.650, THE O.S.H.A. STANDARD SHALL PREVAIL.
2. WHEN CONDITIONS ARE SATURATED OR SUBMERGED, USE THIGH SHEETING. THIGH
SHEETING REFERS TO THE USE OF SPECIAL TIMBER PLANKS AT LEAST THREE INCHES
THICK, STEEL SHEET PILING, OR SIMILAR CONSTRUCTION, THAT WHEN DRIVEN OR
PLACED IN POSITION PROVIDE A TIGHT WALL TO RESIST THE LATERAL PRESSURE OF
WATER. CLOSE SHEETING REFERS TO THE PLACEMENT OF PLANKS SIDE-BY-SIDE
ALLOWING AS LITTLE SPACE AS POSSIBLE BETWEEN THEM.
3. ALL SPACING INDICATED IS MEASURED CENTER TO CENTER.
4. WALLS ARE TO BE INSTALLED WITH THE GREATER DIMENSION HORIZONTAL.
5. IF THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE TO
THE BOTTOM OF THE TRENCH EXCEEDS TWO AND ONE-HALF FEET, UPRIGHTS SHALL
BE FIRMLY EMBEDDED OR A MUD SILL SHALL BE USED. WHERE UPRIGHTS ARE
EMBEDDED, THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE
TO THE BOTTOM OF THE TRENCH SHALL NOT EXCEED 36 INCHES. WHEN MUD SILLS
ARE USED, THE VERTICAL DISTANCE SHALL NOT EXCEED 42 INCHES. (NOTE: MUD
SILLS ARE VALES THAT ARE INSTALLED AT THE TOE OF THE TRENCH SIDE.)
6. TRENCH JACKS MAY BE USED IN LIEU OF OR IN COMBINATION WITH TIMBER CROSS
BRACES.
7. IF SHORING IS THE CHOSEN SUPPORT SYSTEM, THE INSTALLATION IS TO START
FROM THE TOP OF THE TRENCH OR EXCAVATION AND WORK DOWNWARD.
8. SPOIL MUST BE STORED TWO FEET OR MORE FROM THE EDGE OF THE EXCAVATION,
AND BE RETAINED IN AN EFFECTIVE MANNER.
9. WHEN HEAVY LOADS MUST BE LOCATED NEAR AN EXCAVATION, THE WALLS MUST
BE BRACED, SHEET PILED OR SHORED TO SAFELY SUPPORT THE EXTRA WEIGHT.
10. DIVERSION DIKES AND DITCHES OR OTHER SUITABLE MEANS MUST BE USED TO
PREVENT SURFACE WATER FROM ENTERING AN EXCAVATION AND TO PROVIDE
ADEQUATE DRAINAGE OF THE AREA ADJACENT TO THE EXCAVATION. WATER IS NOT
ALLOWED TO ACCUMULATE IN A TRENCH OR EXCAVATION.
11. AN ADEQUATE MEANS OF EXIT, SUCH AS A LADDER OR STEPS MUST BE
PROVIDED AN LOCATED SO AS TO REQUIRE NO MORE THAN 25 FEET OF LATERAL
TRAVEL.
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1391 SEAMIST LANE <77845>
POST OFFICE BOX 9253
COLLEGE STATION, TEXAS 77842
EMAIL: civil@rmengineer.eom
OFFICE - (979) 690-0329
FAX - (979) 690-0329
SURVEYOR
KERR SURVEYING, LLC
505 CHURCH STREET
COLLEGE STATION, TX 77841
OFF: (979) 268-3195
FAX: (979) 691-8904
DATE I DESCRIPTION
I
PRELIMINARY
THIS DOCUMENT IS RELEASED
FOR THE PURPOSE OF
AUTHORITYREVIEW UNDER THE
OF -.;•
• 88583, ON ,.
!!: IT IS NOTTO BE USED
FOR CONSTRUCTION,BIDDING
OR PERMIT PURPOSES.
SPECIAL NOTES:
1. CLAYS, SILTS, LOAMS,_ OR
NON-HOMOGENEOUS SOILS REQUIRE
SHORING AND BRACING.
2. THE PRESENCE OF GROUND WATER
REQUIRES SPECIAL TREATMENT.
APPROXIMATE ANGLE OF REPOSE
TRENCH SAFETY NOTES:
1. O.S.H.A. STANDARD 29 C.F.R. 1926.650 SHALL BE USED FOR THE DESIGN OF
TRENCH SAFETY REQUIREMENTS. SHOULD THERE BE ANY CONFLICT BETWEEN THIS
DRAWING AND C.F.R. 1926.650, THE O.S.H.A. STANDARD SHALL PREVAIL.
2. WHEN CONDITIONS ARE SATURATED OR SUBMERGED, USE THIGH SHEETING. THIGH
SHEETING REFERS TO THE USE OF SPECIAL TIMBER PLANKS AT LEAST THREE INCHES
THICK, STEEL SHEET PILING, OR SIMILAR CONSTRUCTION, THAT WHEN DRIVEN OR
PLACED IN POSITION PROVIDE A TIGHT WALL TO RESIST THE LATERAL PRESSURE OF
WATER. CLOSE SHEETING REFERS TO THE PLACEMENT OF PLANKS SIDE-BY-SIDE
ALLOWING AS LITTLE SPACE AS POSSIBLE BETWEEN THEM.
3. ALL SPACING INDICATED IS MEASURED CENTER TO CENTER.
4. WALLS ARE TO BE INSTALLED WITH THE GREATER DIMENSION HORIZONTAL.
5. IF THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE TO
THE BOTTOM OF THE TRENCH EXCEEDS TWO AND ONE-HALF FEET, UPRIGHTS SHALL
BE FIRMLY EMBEDDED OR A MUD SILL SHALL BE USED. WHERE UPRIGHTS ARE
EMBEDDED, THE VERTICAL DISTANCE FROM THE CENTER OF THE LOWEST CROSS BRACE
TO THE BOTTOM OF THE TRENCH SHALL NOT EXCEED 36 INCHES. WHEN MUD SILLS
ARE USED, THE VERTICAL DISTANCE SHALL NOT EXCEED 42 INCHES. (NOTE: MUD
SILLS ARE VALES THAT ARE INSTALLED AT THE TOE OF THE TRENCH SIDE.)
6. TRENCH JACKS MAY BE USED IN LIEU OF OR IN COMBINATION WITH TIMBER CROSS
BRACES.
7. IF SHORING IS THE CHOSEN SUPPORT SYSTEM, THE INSTALLATION IS TO START
FROM THE TOP OF THE TRENCH OR EXCAVATION AND WORK DOWNWARD.
8. SPOIL MUST BE STORED TWO FEET OR MORE FROM THE EDGE OF THE EXCAVATION,
AND BE RETAINED IN AN EFFECTIVE MANNER.
9. WHEN HEAVY LOADS MUST BE LOCATED NEAR AN EXCAVATION, THE WALLS MUST
BE BRACED, SHEET PILED OR SHORED TO SAFELY SUPPORT THE EXTRA WEIGHT.
10. DIVERSION DIKES AND DITCHES OR OTHER SUITABLE MEANS MUST BE USED TO
PREVENT SURFACE WATER FROM ENTERING AN EXCAVATION AND TO PROVIDE
ADEQUATE DRAINAGE OF THE AREA ADJACENT TO THE EXCAVATION. WATER IS NOT
ALLOWED TO ACCUMULATE IN A TRENCH OR EXCAVATION.
11. AN ADEQUATE MEANS OF EXIT, SUCH AS A LADDER OR STEPS MUST BE
PROVIDED AN LOCATED SO AS TO REQUIRE NO MORE THAN 25 FEET OF LATERAL
TRAVEL.
CLIENT INFORMATION
FI MANAGEMENT
c/o ALI JAFFAR
5727 RICHMOND AVE., APT. 202
DALLAS, TX. 75206
OFF: (979) 314-1333
FAX: (979) 216-1586
FILENAME: 0325UPlA I SCALE: N.T.S.
SUBMITTED DATE: FEBRUARY 11, 2008
DRAWN BY: A.J.B.
CHECKED BY: R.A.M.
FIELD BOOK: 9 PAGES: 38-43
RME CONSULTING ENGINEERS
CLIENT NO. PROJECT NO.
220 - 0325
■
SHEET ' 1 OF 11
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CLIENT INFORMATION
FI MANAGEMENT
c/o ALI JAFFAR
5727 RICHMOND AVE., APT. 202
DALLAS, TX. 75206
OFF: (979) 314-1333
FAX: (979) 216-1586
FILENAME: 0325UPlA I SCALE: N.T.S.
SUBMITTED DATE: FEBRUARY 11, 2008
DRAWN BY: A.J.B.
CHECKED BY: R.A.M.
FIELD BOOK: 9 PAGES: 38-43
RME CONSULTING ENGINEERS
CLIENT NO. PROJECT NO.
220 - 0325
■
SHEET ' 1 OF 11